Detecting Method for Touch Panel

a detection method and touch panel technology, applied in the field of touch panel detection methods, can solve the problems of resistive touch panel not being able to process multiple touch inputs or perform fingerprint recognition, resistive touch panel subject to the limitation of minimum applied force, slow gradient image processing method, etc., and achieve the effect of saving data storage spa

Active Publication Date: 2010-04-01
AU OPTRONICS CORP
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Benefits of technology

[0007]It is an object of the present invention to provide a det

Problems solved by technology

However, the resistive touch panel cannot process multiple touch inputs or perform fingerprint recognition.
Furthermore, the user needs to apply certain amount of pressure on the touch point to create a conduction loop, thus the r

Method used

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  • Detecting Method for Touch Panel
  • Detecting Method for Touch Panel
  • Detecting Method for Touch Panel

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Embodiment Construction

[0021]The present invention provides a detecting method for a touch panel. In preferred embodiments, the detecting method of the present invention is applied to an optical touch panel. However, in different embodiments, the detecting method of the present invention can be applied to capacitive touch panels, inductive touch panels, resistive touch panels, or other touch panels with multi-touch function.

[0022]FIG. 1 is a schematic view of the touch panel. As FIG. 1 shows, the touch panel includes a plurality of sensing units 101. In a preferred embodiment, the sensing units 101 represent unit areas obtained by dividing the touch panel. The sensing units 101 are preferably arranged to form a sensing matrix 110, wherein the sensing matrix 110 has a plurality of parallel sensing row 130. Each of the sensing rows 130 includes a plurality of the sensing units 101 distributed in a straight line. Take a 16×16 sensing matrix 110 for instance; the sensing matrix 110 has sixteen sensing rows 13...

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Abstract

This invention provides a detecting method for a touch panel, comprising providing a sensing matrix having a plurality of sensing units, detecting sensing data generated from the sensing unit and defining the sensing unit as a touch point or a non-touch point based on the sensing data and group at least a portion of the touch points to form a touch point group. In the same touch point group, projection of a touch point overlaps a projection of at least one touch point of the touch point group in one of a row direction and a column direction while adjacent to a projection in the other direction of at least one touch point of the touch point group. Afterward, extreme positions of the touch point group in the row direction and the column direction is retrieved. Lastly, the detecting method includes determining a touch center position based on the extreme positions in the row direction and the column direction.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]This invention relates to a detecting method for a touch panel.[0003]2. Description of the Prior Art[0004]Flat display devices have become the mainstream in various types of display devices. For instance, the home televisions, monitors of personal computers and laptop computers, mobile phones, and display cameras are electronic products which extensively incorporate the flat display devices. As product design is driven toward user friendliness, thus display panels having touch input function are gradually becoming a key aspect in the development of flat display device industry.[0005]Conventional touch panel technologies include resistive type, capacitive type and optical type touch panels. As for the resistive touch panels, the working principle is to determine a touch point by detecting voltage drops on the touch panel. The resistive touch panel includes two conductive layers separated by a narrow gap and a voltage dif...

Claims

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Application Information

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IPC IPC(8): G06F3/041
CPCG06F3/0416G06F3/04166
Inventor YANG, CHUN-WEIHSU, YU-MIN
Owner AU OPTRONICS CORP
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